update spectra generation
make a 2D lie bracket of two functions
Merge all the NCEP files into one
change default souce files for plotspecVvar.m
Break out subfunctions into their own files,

figure ploting scripts are moved into subdirectory
more general use functions are moved to thier own file in the main
directory
Plot upper 1/2 of domain
use t0sim and tfsim as time axes limits instead of hard coding